Japan’s Rate Hikes Could Trigger a Global Carry-Trade Unwind—but Not a Stock Market Crash

Table of Contents

• You might want to know
• Japan’s Rate Hikes, Carry Trades, and China’s Currency Challenge
• Key Insights Table
• Afterwards...

You might want to know

• Could higher Japanese interest rates prompt investors to unwind carry trades without causing a global stock market crash?
• Why might capital seeking low-cost funding turn to the Chinese yuan, and what pressures could this create for China?

Japan’s Rate Hikes, Carry Trades, and China’s Currency Challenge

Global markets are once again focused on unusual movements in two major East Asian currencies: the Japanese yen and the Chinese yuan. The Bank of Japan (BOJ), after beginning to raise rates in September, is widely expected by markets to act again in December, with some forecasts suggesting that its benchmark rate could eventually move toward 2%. At the same time, international funds and cross-border investors are examining other currencies that offer comparatively low borrowing costs. One potential focus is the Chinese yuan (RMB).

The central question is whether further Japanese rate increases will force investors to unwind carry trades and trigger a broad sell-off in global equities. Macroeconomic commentator Wu Chia-lung (吳嘉隆), speaking on the program What Investors Want to Know (《股民想知道》), argues that carry-trade unwinding is likely, but that it should not automatically be treated as a forecast of a stock market crash. In his view, the more direct concern may be the pressure that cross-border capital flows place on the People’s Bank of China (PBOC), China’s central bank, and its foreign-exchange reserves.

A carry trade generally involves borrowing in a currency with a low interest rate and using the proceeds to invest in assets that are expected to offer higher returns. For many years, the yen was an especially popular funding currency because Japan maintained exceptionally loose monetary conditions. Investors could borrow yen at relatively low cost, convert the funds into other currencies, and buy assets such as higher-yielding U.S. government bonds, U.S. equities, or shares in major technology companies. When borrowing costs rise or the funding currency strengthens, investors may have to close or reduce these positions.

Why Japan may continue raising rates

Wu describes Japan’s shift away from very low rates as difficult to avoid. Japan’s long-standing deflationary environment has faded, while inflation has remained around 2.5%–3% or higher for an extended period and at one point came close to 4%. If benchmark rates remain below 1% while prices continue to rise, real interest rates remain deeply negative. That can weaken domestic purchasing power and add to the cost burden faced by households and businesses.

Currency depreciation is another part of the policy challenge. A substantial interest-rate gap between Japan and the United States has contributed to long-term pressure on the yen. Japanese authorities have previously attempted to support the currency through measures involving U.S. Treasury securities and dollar cash, but Wu argues that such interventions are insufficient to resolve the underlying interest-rate differential. In his assessment, a more durable response would require Japanese rates to rise enough to narrow the gap with U.S. rates.

Wu therefore argues that Japanese interest rates may need to move toward 2% or above. That would represent a major change for a country accustomed to near-zero rates. A stronger yen could make imported goods less expensive, potentially easing imported inflation. However, the pace and extent of any policy adjustment remain uncertain, and the effect on the economy will depend on domestic demand, wages, inflation, and financial conditions.

What a carry-trade unwind could mean for markets

If the cost of yen borrowing rises, investors using the yen to fund overseas positions may decide to reduce their exposure. A typical unwind involves selling some foreign-currency assets, converting the proceeds back into yen, and repatriating the funds to repay yen-denominated borrowing. This process can support the yen and shift capital back toward Japan. It may also increase volatility in the assets being sold, particularly if investors hold leveraged positions and act at the same time.

Wu’s central distinction is between a change in funding flows and a collapse in equity markets. In his view, some highly leveraged investors may need to reduce risk, but that does not by itself establish that the wider market is headed for a systemic crash. Long-term equity performance also depends on corporate earnings, business fundamentals, valuations, and technological change. The source commentary specifically points to continued demand and large orders associated with the global artificial-intelligence industry as factors that may support technology businesses over the long term.

That argument is not a guarantee that share prices will rise or that market declines will be brief. A carry-trade unwind can add to short-term selling pressure, and a broader downturn could occur if other risks coincide with it. The more limited point is that investors should not equate every funding adjustment with an inevitable collapse. Market corrections can also reflect valuation changes, profit-taking, or shifts in positioning rather than a complete deterioration in corporate prospects.

Why the yuan may attract carry-trade interest

As yen funding becomes less attractive, international investors may look for other low-cost sources of borrowing. Wu highlights the difference between reported yields on 10-year government bonds: China at approximately 1.68%, Japan at approximately 3.0%, and the United States at approximately 5.2%. These figures are presented as an illustration of the interest-rate differences that can draw investors’ attention.

Wu argues that China’s property-sector difficulties and weak real-economy conditions have left substantial funds within large state-owned banks with limited domestic investment opportunities. In the scenario he describes, investors could borrow yuan at a cost below 2%, exchange it for U.S. dollars, and purchase U.S. Treasury securities yielding above 5%. The resulting spread is described as more than 3 percentage points.

Such a comparison is not the same as a guaranteed, risk-free profit. Currency movements, transaction costs, access to funding, regulatory restrictions, and changes in bond prices can all affect the actual return. Even so, the yield gap helps explain why investors may consider yuan-funded strategies and why Chinese authorities could be concerned about capital leaving the country. The yuan’s role as a potential funding currency would depend on market access and policy conditions, not only on the difference between headline yields.

China’s reserve pressure and policy dilemma

The mechanism described by Wu begins with borrowing yuan within China, exchanging it for U.S. dollars through the domestic financial system, and sending the dollars overseas for investment. If such flows grow, they could increase demand for foreign currency and place pressure on China’s foreign-exchange reserves. The concern is that persistent outflows may make it harder for the central bank to manage exchange-rate volatility and preserve resources for essential imports.

The policy response would be complicated by competing domestic priorities. If China cuts interest rates to support a weak economy, the gap between domestic borrowing returns and overseas yields could widen, potentially encouraging more capital to leave and adding downward pressure on the yuan. Conversely, raising rates to discourage outflows could increase financing costs for property companies, manufacturers, and households at a time when domestic demand and the property sector are already under strain.

Wu characterizes this as a difficult policy conflict: weak economic conditions could normally argue for lower rates and a more competitive currency, while capital outflows and pressure on foreign-exchange reserves could argue for tighter policy and currency support. He suggests that authorities could face growing incentives to impose stronger capital controls. That is a forecast and interpretation, rather than a confirmed policy decision. The eventual choices would depend on economic conditions, the scale and composition of capital flows, and the authorities’ priorities.

These tensions also explain why the question of yuan-funded trades matters beyond the currency market. A large-scale movement of funds could affect exchange-rate management, financial institutions, and the room available for monetary policy. At the same time, the effect should be assessed with care: the existence of an interest-rate gap does not by itself establish how much capital will move or how quickly it might do so.

Implications for investors

The source commentary concludes that investors should distinguish between global capital shifting direction and the long-term outlook for companies. It argues that uncertainty about currencies should not, by itself, erase the potential significance of the technology cycle or demand for businesses that serve essential needs. Information security is mentioned as one such area, alongside technology leaders. The article also refers to Taiwan Semiconductor Manufacturing Company (台積電, TSMC) and a price below NT$2,400 as an example in the source text. This reference is not an investment recommendation or a prediction that the share price will reach that level.

Investors evaluating these themes should consider currency exposure, leverage, liquidity, valuations, and the possibility that policy decisions may differ from market expectations. A strong business outlook does not eliminate market risk, and a lower share price does not automatically make an asset suitable for every investor. The key analytical distinction is that a carry-trade unwind can create volatility without necessarily determining the long-term direction of every market or company.

Key Insights Table

Afterwards...

The next phase of this story will depend on how the BOJ balances inflation and currency stability, how international investors respond to changing funding costs, and how Chinese authorities manage domestic weakness alongside capital-flow pressures. Market expectations can shift quickly, so the cited rate path and yield comparisons should be treated as the source’s snapshot and analysis rather than guaranteed outcomes.

For investors, the practical lesson is to separate short-term volatility from long-term business fundamentals while still taking currency, liquidity, and policy risks seriously. Carry-trade unwinding is a potential source of market stress, not a standalone verdict on the future of equities. Any investment decision should be based on independent research and a careful assessment of individual risk tolerance. The stocks, funds, futures, prices, and market views discussed here are for informational purposes only and do not constitute investment advice.

This article is adapted from material reprinted with authorization from UAnalyze (優分析). The original source was referenced as an original-article link. The views summarized here are attributed to the source and its named commentator, and readers should independently assess the information and risks.